removed unneeded permissions block

Author: GA-XavierGonzalez

.github/workflows/scan-image.yml

@@ -24,9 +24,6 @@ jobs:
   dive:
     runs-on: ubuntu-latest
     name: Build and Scan image
-    permissions:
-      contents: read
-      security-events: write
     steps:
       - name: Checkout
         uses: actions/checkout@v3